The machine is ideal for eliminating drag and wear associated with high pre-load forces. The anti-backlash assembly provides the maximum load-carrying capability and the highest axial and radial stiffness of any nut assembly. Machines are designed for smooth, quiet operation and long life, and provide low drag torque. They are also self-lubricating and instrumental in vibration and noise reduction challenges, as encountered in the semiconductor industry. The nuts move smoothly with very low friction. Available leads from 1.27 mm/0.050 inches to 92 mm/3.6 inches and lengths up to 4 m/160 inches cover a range unmatched by ball screws.